Unlock AD Account activity

To access this activity in the workflow editor, select the
Custom tab, and then navigate to Custom Activities > Active Directory.

Note: This activity replaces an AD activity by
the same name available in prior releases. If you have a workflow that uses the deprecated
activity, your workflow will continue to work normally after upgrading to Instanbul.
However, all new workflows must use the custom version of this activity, which was built
with the PowerShell activity designer.